One day, 3 drivers with their lorry stopped at a checkpost to pass the weight limit check.
The officer in charge presents them with a riddle and if they answer correctly within the first 2 attempts,
they will be allowed to pass through with no penalties even if they are over the weight limit.
The Officer hands each of them a notice showing their weight difference with that of the weight limit, down to the nearest Kilogram.
Officer: "Funnily enough, the numbers I gave you are consecutive, and if I add up the difference between each of your
load and the limit, and to that I subtract the multiplication of those same numbers, I get zero."
"My question is: can you guess which other two numbers are in your friend's hands?"
Using their first attempt, the three drivers answer at the same time:
"Yes", "No" and "No".
Can you save them all a potential penalty fee and use their last attempt to guess the numbers ?
Penalty fee
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